Not tan. Not a versatile footwear color and not traditionally an evening color. Also, in a casual environment like a bar, it could easily get discolored.

That leaves black and mahogany. The former would be iffy with navy chinos, which are limited in usefulness anyway. Those two dark colors probably would not look right with light-colored pants. In other words, there's a need for a different pair of quality footwear to wear with some of the items. One shouldn't have just a single pair of good boots or shoes anyway - lifespan would go way down.